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    <title>ShellCheck: SC2113 – `function` keyword is non-standard. Use `foo()` instead of `function foo`.</title>
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    <h1>SC2113 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2113">See this page on GitHub</a>
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    <h2
id="function-keyword-is-non-standard-use-foo-instead-of-function-foo"><code>function</code>
keyword is non-standard. Use <code>foo()</code> instead of
<code>function foo</code>.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2113.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="co">#!/bin/sh</span></span>
<span id="cb1-2"><a href="SC2113.html#cb1-2" aria-hidden="true" tabindex="-1"></a><span class="kw">function</span><span class="fu"> hello</span> <span class="kw">{</span></span>
<span id="cb1-3"><a href="SC2113.html#cb1-3" aria-hidden="true" tabindex="-1"></a>    <span class="bu">echo</span> <span class="st">&quot;Hello World&quot;</span></span>
<span id="cb1-4"><a href="SC2113.html#cb1-4" aria-hidden="true" tabindex="-1"></a><span class="kw">}</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2113.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="co">#!/bin/sh</span></span>
<span id="cb2-2"><a href="SC2113.html#cb2-2" aria-hidden="true" tabindex="-1"></a><span class="fu">hello()</span> <span class="kw">{</span></span>
<span id="cb2-3"><a href="SC2113.html#cb2-3" aria-hidden="true" tabindex="-1"></a>    <span class="bu">echo</span> <span class="st">&quot;Hello World&quot;</span></span>
<span id="cb2-4"><a href="SC2113.html#cb2-4" aria-hidden="true" tabindex="-1"></a><span class="kw">}</span></span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p><code>function</code> is a non-standard keyword that can be used to
declare functions in Bash and Ksh.</p>
<p>In POSIX <code>sh</code> and <code>dash</code>, a function is defined
without a <code>function</code> keyword. Instead, the function name is
followed by <code>()</code> as in the correct example.</p>
<h3 id="exceptions">Exceptions:</h3>
<p>None</p>
<h3 id="related-resources">Related resources:</h3>
<ul>
<li>Help by adding links to BashFAQ, StackOverflow, man pages, POSIX,
etc!</li>
</ul>
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